Improvement in rigging-stoppers



UNITED; STATES PATENT OFFICE,

HENRY THOMPSON, OF ROOKLAND, MAINE, ASSIGNOR TO HIMSELF, D. O.

HASKELL, AND O. H. HASKELL, OF SAME PLACE. I

IMPROVEMENT IN RIGGING-STOPPERS.

Specification forming part of Letters Patent No. 55,7S9,.dated June 19, 1866.

T0 all 107mm it may concern: y

Be it known that I, HENRY THOMPSON, of Rockland, in the county of Knox and State ot Maine have invented a new and uset'ul Ri 0O'iu 0'- 7 bb b Stopper; and I do hereby declare the same to be fully described in the following specication and represented in the accompanying' drawings, o:l which- Figure l is a side view, and Fig. 2 an edge elevation, of it. Figs. 3 and et are. views ofthe pair ot' its jaws. I

In some respects it is like au ordinary vise provided with a handle, although in others it differs materially from such vise. 1t has two jaw-levers, A B, one ot' which is made to project from a handle, (l, and has the other' jaw-lever hinged to it, as shown at D. The jaws 0t` these levers, which are exhibited in the drawings, are to be so formed as to iit to a rope-that is, they are to be provided with helix-grooves a. a (t b l) b-whereby, when they are made to grasp the settingup rope, which runs through the dead-eyes ot' the shrouds of a vessel, they may fit to its strands, and thus be prevented from slipping on the rope.

A spring, E, arranged between the two jawlevers and fastened to one of them, serves to move the other ina direction away from the' rst, so as to open the jaws.

A toothed rack, F, is formed on the movable jaw-lever, and engages with a toothed sector,

G, affixed to another lever, H, whose t'ulcruin fis supported by two arms, I I, which are arranged on opposite sides ot' the two jaw-levers and 4turn on a common fulcrum-pin, g, going' through the stationary jaw-lever.

rlhe toothed sector and its lever are for closing the jaws and holding them closed upon a rope, the arms admitting` ot' the adjustment of the sector in the raek-thatis, higher or lower therein-as circumstances may require.

The said instrument or riggingstopper is designed to be used to prevent the strainingrope roven through the dead-eyes from slipping back after itlias been drawn tight by a tackle or other means, and for this purpose the rigging-stopper is to be made to grasp the rope close to a dead-eye and to hold such rope firmly while its end is being secured or fastened.

I claim as my invention- The rigging-stopper, made and for use substantially as hereinbefore described-that is to say, ot' the toothed sectoral lever, the rack, and the movable supporting-arm and the two jawed levers, arranged and applied together in manner and so as to operate as explained.

HENRY THOMPSON.

Witnesses 1t. H. EDDY, F. P. HALE, Jr. 

